Home / 520,094.90-780,288.15-253,864.10

Finding the Fourth Proportional to 520,094.90, 780,288.15 and 253,864.10

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Solution

The fourth proportional to 520,094.90, 780,288.15 and 253,864.10 is: 380,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,094.90 : 780,288.15 = 253,864.10 : x
  2. Step 2: Convert to fraction form
    520,094.90/780,288.15 = 253,864.10/x
  3. Step 3: Cross multiply
    520,094.90x = 780,288.15 × 253,864.10
  4. Step 4: Simplify right side
    520,094.90x = 198,087,148,940.42
  5. Step 5: Solve for x
    x = 198,087,148,940.42/520,094.90
  6. Step 6: Final answer
    x = 380,867.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.